Patents by Inventor Woo Young Choi

Woo Young Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210124453
    Abstract: A touch sensing device in an electronic device, the electronic device including a touch manipulation unit disposed in a housing of the electronic device, the touch manipulation unit including a first insulating member penetrating through the housing, the touch sensing device including a first sensor unit disposed on an internal surface of the first insulating member, and an oscillation circuit connected to the first sensor unit, the oscillation circuit being configured to generate a first oscillation signal having a first resonance frequency that varies in response to a touch capacitance generated in response to the first insulating member being touched, wherein the first sensor unit contacts the internal surface of the first insulating member, and does not contact the housing.
    Type: Application
    Filed: July 29, 2020
    Publication date: April 29, 2021
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Hyoung LEE, Joo Yul KO, Woo Young CHOI, Jung Chul GONG
  • Publication number: 20210126090
    Abstract: A semiconductor device including a device isolation layer defining an active region; a first trench in the device isolation layer; a second trench in the active region; a main gate electrode structure filling a portion of the first trench and including a first barrier conductive layer and a main gate electrode; a pass gate electrode structure filling a portion of the second trench and including a second barrier conductive layer and a pass gate electrode; a support structure filling another portion of the second trench above the pass gate electrode; a first capping pattern filling another portion of the first trench above the main gate electrode; and a second gate insulating layer extending along a bottom and sidewall of the second trench, wherein the second barrier conductive layer is between the second gate insulating layer and the pass gate electrode and extends along a bottom and sidewall thereof.
    Type: Application
    Filed: June 10, 2020
    Publication date: April 29, 2021
    Inventors: Hui-Jung KIM, Kyu Jin KIM, Sang-Il HAN, Kyu Hyun LEE, Woo Young CHOI, Yoo Sang HWANG
  • Patent number: 10921160
    Abstract: A sensing circuit in a device having a moving body in which a unit to be detected including first and second pattern units spaced apart from each other is formed includes an oscillation circuit unit including first and second oscillation circuits fixedly mounted on a substrate spaced apart from the unit to be detected, including, respectively, first and second sensing coils having first and second inductance values depending on areas of overlap between the first and second sensing coils and the first and second pattern units and outputting, respectively, first and second sensed oscillation signals based on the first and second inductance values; and a sensing circuit outputting an output signal having movement information of the moving body based on each period count value for each of the first and second sensed oscillation signals using a reference oscillation signal.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: February 16, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Woo Lee, Woo Young Choi
  • Publication number: 20210032803
    Abstract: A conductive and flexible carbon fiber according to the present disclosure includes a carbon fiber; a resin layer formed on the carbon fiber; and a metal plating layer formed on the resin layer. The resin layer of the carbon and flexible carbon fiber according to the present disclosure is uniformly coated on the carbon fiber, such that a breakage of the carbon fiber during the conductive carbon fiber production process may be prevented. In addition, the metal plating layer having the uniform thickness is plated on the resin layer having the uniform thickness, such that the electric conductivity of the carbon fiber may be improved and the flexibility of the carbon fiber may also be increased. In addition, a production process of the carbon and flexible carbon fiber according to the present disclosure is simplified, such that the production cost and time may be saved.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 4, 2021
    Inventors: Seung Jeong, Young Chul Jin, Jung Hoon Yang, Woo Young Choi, Jae-Hwa Kim, Chun seong Park
  • Publication number: 20210004097
    Abstract: A sensing device with a fingerprint sensor is provided. The sensing device includes a touch input pattern included in the fingerprint sensor, an oscillation circuit connected to the touch input pattern and configured to change a capacitance of the oscillation circuit when a touch occurrence is sensed by the touch input pattern and generate an oscillation signal based on the change in the capacitance, and an operation detection circuit configured to detect a touch occurrence based on a frequency included in the oscillation signal input from the oscillation circuit and generate a detection signal.
    Type: Application
    Filed: February 24, 2020
    Publication date: January 7, 2021
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Eui PARK, Joo Yul KO, Ho Kwon YOON, Woo Young CHOI, Soo Woong LEE, Joo Hyoung LEE, Ju Yong KIM
  • Patent number: 10868946
    Abstract: An actuator includes a magnet, a driving coil, a driver, and a position detector. The magnet is disposed on one surface of a lens barrel. The driving coil is disposed at a proximity of the magnet. The driver is configured to apply a driving signal to the driving coil to move the lens barrel along an optical axis. The position detector is configured to generate an oscillation signal of which a frequency is changed based on movement of the magnet and configured to compare oscillation signals generated in a first position and a second position of the lens barrel to detect a present position of the lens barrel.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: December 15, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Woo Lee, Joo Hyoung Lee, Je Hyuk Ryu, Woo Young Choi, Yong Woon Ji, Soo Woong Lee, Byung Joo Hong, Joo Yul Ko
  • Publication number: 20200389776
    Abstract: An electronic device includes a narrowband internet of things (NB-IoT) circuit; a shared central processor to control the narrowband internet of things circuit; a shared memory to store data or code from the shared central processor; and a communicator controlled by the shared central processor. The communicator stores the data or the code in the shared memory.
    Type: Application
    Filed: December 3, 2019
    Publication date: December 10, 2020
    Inventors: Woo Young CHOI, Dong Yun KIM, Ivan GALKIN, Ji-Hoon PARK, Jong-Jin LEE
  • Publication number: 20200379603
    Abstract: A touch input sensing device configured to be added to an electronic device, the electronic device including a touch input unit, the touch input unit including a first touch member integrated with a housing. The touch input sensing device includes a resonant circuit configured to generate a resonance signal having a resonant frequency that varies based on a touch of the touch input unit, a digital frequency counter configured to count a reference frequency signal based on the resonance signal, or count the resonance signal based on the reference frequency signal, to generate a count value, and a touch detector configured to detect whether the touch of the touch input unit has occurred based on the count value generated by the digital frequency counter, and output a touch detection signal indicating whether the touch has occurred.
    Type: Application
    Filed: March 4, 2020
    Publication date: December 3, 2020
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Woo LEE, Ho Kwon YOON, Yong Woon JI, Dong Hun HAN, Woo Young CHOI, Joo Yul KO, Je Hyuk RYU, Byung Joo HONG
  • Patent number: 10855891
    Abstract: An apparatus to control a position of a camera module includes a magnetic member, a coil, a driver, a signal extractor, and a position detector. The magnetic member is disposed on a lens barrel of the camera module. The coil is disposed opposite to the magnetic member. The driver is configured to provide a position confirmation signal to the coil. The signal extractor is configured to extract a specific frequency component from a signal of the coil including the position confirmation signal and output a detection signal. The position detector is configured to provide a position signal corresponding to a position of the magnetic member based on the detection signal.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: December 1, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Woo Young Choi, Sang Hoon Kim, Joo Yul Ko, Joo Hyoung Lee
  • Publication number: 20200166380
    Abstract: A sensing circuit in a device having a moving body in which a unit to be detected including first and second pattern units spaced apart from each other is formed includes an oscillation circuit unit including first and second oscillation circuits fixedly mounted on a substrate spaced apart from the unit to be detected, including, respectively, first and second sensing coils having first and second inductance values depending on areas of overlap between the first and second sensing coils and the first and second pattern units and outputting, respectively, first and second sensed oscillation signals based on the first and second inductance values; and a sensing circuit outputting an output signal having movement information of the moving body based on each period count value for each of the first and second sensed oscillation signals using a reference oscillation signal.
    Type: Application
    Filed: June 3, 2019
    Publication date: May 28, 2020
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Woo LEE, Woo Young CHOI
  • Patent number: 10637375
    Abstract: A actuator using a voice coil motor (VCM) method includes a coil configured to face a magnetic member disposed on a lateral surface of a lens carrier, and be spaced apart from the magnetic member, a driving circuit configured to supply a composite current including a driving current and a position detection current to the coil based on a composite voltage input to the driving circuit, and an impedance/digital conversion circuit configured to convert an alternating current (AC) voltage signal including a specific frequency component acquired at opposite ends of the coil via a demodulation scheme, extract a low-frequency signal having an inductance component of the coil, and detect a position signal based on the low-frequency signal.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 28, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Woo Young Choi, Jung Eui Park, Joo Hyoung Lee, Joo Yul Ko
  • Patent number: 10591697
    Abstract: A camera module actuator includes, a magnet, a coil, a driver, and a position estimating processor. The coil is disposed to face the magnet. The driver is configured to move the magnet by applying a driving signal to the coil. The position estimating processor is configured to estimate a position of the magnet from an oscillating signal. A frequency of the oscillating signal varies according to a movement of the magnet.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: March 17, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Yul Ko, Joo Hyoung Lee, Jong Woo Lee, Je Hyuk Ryu, Woo Young Choi, Soo Woong Lee, Byung Joo Hong
  • Patent number: 10573774
    Abstract: In case of forming electrodes for electronic device using a two-dimensional semiconductor, a two-dimensional semiconductor layer doped into n-type or p-type is formed on a substrate, a first area and a second area of the doped two-dimensional semiconductor layer is patterned into a predetermined pattern shape, and a first electrode and a second electrode are formed on the patterned first and second areas, respectively.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: February 25, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Jin Hong Park, Hyung Youl Park, Jeong Hoon Kim, Woo Young Choi
  • Patent number: 10554163
    Abstract: An apparatus for controlling a position of a voice coil motor (VCM) includes a coil disposed to face a magnetic member provided on one surface of a lens carrier; a driving circuit applying a superimposed current, including a driving current and a position detecting current, to the coil; a filter circuit extracting an alternating current (AC) voltage from a voltage across the coil; a voltage/frequency conversion circuit converting the AC voltage extracted by the filter circuit into a frequency signal; and a digital control circuit detecting positional information of the VCM based on a frequency component of the frequency signal.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: February 4, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Eui Park, Woo Young Choi, Joo Hyoung Lee, Joo Yul Ko
  • Patent number: 10554875
    Abstract: An apparatus is provided to control a position of a camera module. The apparatus includes a magnetic member disposed on a lens barrel of the camera module, a coil disposed opposite to the magnetic member, and a driver configured to generate to the coil a position confirmation signal including a specific frequency component. The apparatus also includes a signal extractor configured to extract a detected signal, including the specific frequency component, from a coil signal of the coil, and a peak detector detect a peak value of the detected signal and output a position signal corresponding to a position of the magnetic member based on the peak value.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: February 4, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Hyoung Lee, Woo Young Choi, Sang Hoon Kim, Joo Yul Ko
  • Patent number: 10546934
    Abstract: Provided are a non-volatile memory device and a method of fabricating the same. The non-volatile memory includes a channel layer, a data storage layer disposed on the channel layer, a plurality of control gates arranged on the data storage layer and spaced apart from one another, and conductive cover layers disposed on sidewalls of the control gates facing each other. The plurality of control gates includes a first conductor having a first work function. The conductive cover layers include a second conductor having a second work function that is greater than the first work function.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: January 28, 2020
    Assignees: SK hynix Inc., SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventor: Woo Young Choi
  • Patent number: 10451661
    Abstract: A digital frequency measuring apparatus includes a frequency divider dividing an input frequency signal and providing a divided frequency signal; a period counter counting clock cycles in a period of the divided frequency signal using a clock signal and providing a period count value for each period; and a digital filter amplifying the period count value using an accumulated gain, converting an amplified period count value into a frequency, and providing a first digital output value. The digital filter determines the accumulated gain using a predetermined stage number and a predetermined decimator factor.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 22, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Woo Lee, Joo Hyoung Lee, Je Hyuk Ryu, Woo Young Choi, Yong Woon Ji, Soo Woong Lee, Byung Joo Hong, Joo Yul Ko
  • Patent number: 10451835
    Abstract: An actuator of a camera module includes a magnet, a coil facing the magnet, a driver configured to apply a driving signal to the coil to move the magnet in a direction, and a position estimator. The position estimator is configured to convert an oscillation signal into a digital signal in a delta sigma modulation scheme, and estimate the position of the magnet from the digital signal. A frequency of the oscillation signal varies based on a position of the magnet.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 22, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Woo Young Choi, Soo Woong Lee, Jong Woo Lee, Joo Yul Ko
  • Patent number: 10359651
    Abstract: Disclosed is technology for controlling a bias using an integrated circuit (IC) instead of using a pilot tone. A bias control apparatus includes a photodetector configured to convert at least a portion of data included in an output from an optical modulator to an electrical signal; a power detector configured to convert a root mean square (RMS) value of an amplitude of the converted data to an analog voltage; a comparator configured to compare the output voltage and a pre-stored track hold value; and a bias controller configured to control a bias voltage to be within a preset range from an optimal voltage based on the comparison result.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: July 23, 2019
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Woo Young Choi, Min Hyeong Kim
  • Patent number: 10356089
    Abstract: An electronic device includes a processor and a memory functionally connected to the processor. The electronic device acquires user's biometric information through a biometric sensor, determines virtual biometric information corresponding to the acquired biometric information, and transmits the virtual biometric information to an external electronic device through communication circuitry. The electronic device may include the biometric sensor, the communication circuitry, and the memory may be electrically connected to the biometric sensor and the communication module and store instructions to be executed by the processor.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 16, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon-Soo Chang, Hak-Joo Kim, Sang-Ho Park, Yong-Jun Park, Jong-Hoon Park, In-Jun Son, Yang-Soo Lee, Hyung-Joo Cho, Ho-Dong Jwa, Woo-Young Choi, Dong-Hyun Yeom